KUZMICKAITĖ , E. Certain difficulties in mastering English tense forms in higher special Lithuanian schools. Psichologija, [S. l.], v. 10, p. 49–55, 1969. DOI: 10.15388/Psichol.1969.10.9232. Disponível em: https://www.journals.vu.lt/psichologija/article/view/9232.. Acesso em: 5 may. 2024.